[Zope] query zcatalog over url?

does this look correct? search?start%3Alist=2002-01-15%2000:00:00&start%3Alist=2002-01-15%2023:59:59 &start_usage=range%3Amin%3Amax&Type=Event I'm trying to query ZCatalog for all objects that have Type set to Event and have start on the day 1/15/2002 question do I have to url quote : 's? thanks, ~runyaga